I'm using a high number of samples. Why is my render coming out in low quality?
If you have any number other than 0 on the render layers, then your rendering will be limited to that value.

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Solutions (choose one):


Make the number of samples on the render layer, the number of samples you need.
Turn that number back to 0 so that the sampling is controlled by the overall render settings for the scene.
Turn the layer sampling settings to "ignore"




See this post: Cycles render, noisy even when using a high number of samples